$OpenBSD: patch-src_shunt_main_c,v 1.1 2016/08/12 22:12:13 jca Exp $
--- src/shunt/main.c.orig	Tue Apr 19 22:53:34 2011
+++ src/shunt/main.c	Wed Apr 27 19:48:00 2016
@@ -693,6 +693,10 @@ is_child_running()
 int
 main(int argc, char* argv[])
 {
+    if (pledge("stdio proc exec", NULL) == -1) {
+	perror("pledge");
+	exit(2);
+    }
     int rv = 0;
 
     znum_initialize();
